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Extensor digiti minimi muscle
The extensor minimi digiti (extensor digiti quinti proprius) is a slender muscle of the forearm, placed on the medial side of the Extensor digitorum communis, with which it is generally connected.
It arises from the common Extensor tendon by a thin tendinous slip, from the intermuscular septa between it and the adjacent muscles.
Its tendon runs through a compartment of the dorsal carpal ligament behind the distal radio-ulnar joint, then divides into two as it crosses the hand, and finally joins the expansion of the Extensor digitorum communis tendon on the dorsum of the first phalanx of the little finger.
An additional fibrous slip from the lateral epicondyle; the tendon of insertion may not divide or may send a slip to the ring finger.
Absence of muscle rare; fusion of the belly with the Extensor digitorum communis not uncommon.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Extensor_digiti_minimi_muscle". A list of authors is available in Wikipedia.|